CN103596638A - Communication method and apparatus - Google Patents
Communication method and apparatus Download PDFInfo
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- CN103596638A CN103596638A CN201280017781.4A CN201280017781A CN103596638A CN 103596638 A CN103596638 A CN 103596638A CN 201280017781 A CN201280017781 A CN 201280017781A CN 103596638 A CN103596638 A CN 103596638A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Abstract
The invention relates to a communication method and apparatus. The method comprises: obtaining an RE number when a CSI-RS configuration is conducted in an LTE system and conducting rate matching based on the RE number within a first time threshold; and selecting a current RE number based on matching results of the rate matching. In this way, during certain LTE configuration transient state processes, the correct RE number can be utilized to analyze a PDSCH data package correctly and the data package cannot be lost due to analysis failure because of inconsistency of states of eNB and UE. When an MIMO mode configuration is conducted, transmission of downlink data is conducted on non-MBSFN sub-frames, thereby guaranteeing that data on MBSFN sub-frames in the transient state processes cannot be lost.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of communication means and device.
Background technology
At present, at Long Term Evolution (Long Term Evolution, LTE) in system, at base station layer 3(evolved NodeB Layer3, eNB L3) to subscriber equipment (User Equipment, UE) and base station layer 2(evolved NodeB Layer2, eNB L2) carry out channel state information reference signals (Channel State Information-Reference Signals, CSI-RS) in layoutprocedure, the situation that may exist PDSCH packet correctly not resolved, thus the loss of packet caused.In addition, in multiple-input and multiple-output (Multiple Input Multiple Output, MIMO) system, carry out also having similar problem in MIMO pattern handoff procedure.
Summary of the invention
The embodiment of the present invention provides a kind of communication means and device, to solve the problem of data-bag lost in above scene.
In first aspect, the embodiment of the present invention provides a kind of communication means, and described method comprises:
Obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched;
According to the matching result of described rate-matched, select current RE number.
In second aspect, the embodiment of the present invention provides a kind of communication means, and described method comprises:
When carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.
In the third aspect, the embodiment of the present invention provides a kind of communicator, and described device comprises:
Matching unit, for obtaining RE number, in very first time threshold value, carries out rate-matched according to described RE number, and the matching result of described rate-matched is sent to selected cell;
Selected cell, for receiving the matching result of the described rate-matched of described matching unit transmission, according to the matching result of described rate-matched, selects current RE number.
In fourth aspect, the embodiment of the present invention provides a kind of communicator, and described device comprises:
Processing unit for when carrying out MIMO pattern configurations, carries out the transmission of downlink data on non-MBSFN subframe.
Aspect the 5th, the embodiment of the present invention provides a kind of communicator, and described device comprises:
Network interface;
Processor;
Memory;
The application program of physical store in described memory, described application program comprises and can be used for making described processor and described system to carry out the instruction of following process:
Obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched;
According to the matching result of described rate-matched, select current RE number.
Aspect the 6th, the embodiment of the present invention provides a kind of communicator, and described device comprises:
Network interface;
Processor;
Memory;
The application program of physical store in described memory, described application program comprises and can be used for making described processor and described system to carry out the instruction of following process:
When carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.
In the embodiment of the present invention, while carrying out CSI-RS configuration in LTE system, obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched; According to the matching result of described rate-matched, select current RE number.Realized thus in some configuration transient processes of LTE, can utilize correct RE number correctly to resolve PDSCH packet, can be because of the state of eNB and UE inconsistent causing resolve unsuccessfully and lost data packets.When carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.Can guarantee that thus in transient process, the data in MBSFN subframe can not lost.
Accompanying drawing explanation
Fig. 1 is the transient state schematic diagram carrying out in LTE system in CSI-RS layoutprocedure;
Fig. 2 be in mimo system TM9 to the transient state schematic diagram in TM3 handoff procedure;
The communication means flow chart that Fig. 3 provides for the embodiment of the present invention one;
The communicator schematic diagram that Fig. 4 provides for the embodiment of the present invention two;
The communicator schematic diagram that Fig. 5 provides for the embodiment of the present invention three;
The communication means flow chart that Fig. 6 provides for the embodiment of the present invention four;
The communicator schematic diagram that Fig. 7 provides for the embodiment of the present invention five;
The communicator schematic diagram that Fig. 8 provides for the embodiment of the present invention six.
The specific embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the transient state schematic diagram carrying out in LTE system in CSI-RS layoutprocedure.As shown in Figure 1, in order to guarantee that CSI-RS configuration messages is accurately sent to UE, eNB L3 needs first by Radio Resource, to control (Radio Resource Control, RRC) connect reprovision UE is carried out to CSI-RS configuration, and the CSI-RS that receives UE feedback at eNB L3 has configured after message, by inside of base station message, eNB L2 is carried out to CSI-RS configuration again, therefore, to coming into force of CSI-RS configuration, there is the priority in sequential in UE and eNB L2, we claim to eNB L3 feedback CSI-RS, to have configured message by UE, and to eNB L2 to eNB L3, to feed back the time period that CSI-RS configured message be transient state time section.In transient state time section, due to the UE CSI-RS configuration that entered into force, and also do not come into force CSI-RS configuration of eNB L2, UE is carrying out downlink physical shared channel (Physical Downlink Share Channel so, when PDSCH) unpacking with rate-matched, resource element (Resource Element, the RE) number using is the RE number that deduction CSI-RS takies.And now eNB L2 does not also perceive CSI-RS configuration take-effective, therefore, its RE number that sends the use of PDSCH bag is the RE number of not deducting CSI-RS.Therefore, eNB L2 and UE are in PDSCH rate-matched, and the RE number of use is inconsistent, can cause the PDSCH packet of transient state time section correctly not resolved.
In multiple-input and multiple-output (Multiple Input Multiple Output, MIMO) system, carry out also having similar problem in MIMO pattern handoff procedure.Fig. 2 be in mimo system TM9 to the transient state schematic diagram in TM3 handoff procedure.As shown in Figure 2, transmission mode 9(Transmission Mode, TM9) to transmission mode 3(Transmission Mode, while TM3) switching, eNB L3 connects reprovision by RRC and configures new MIMO pattern to UE, eNB L3 notifies eNB L2 with Downlink Control Information 1A (Downlink Control Information-1A simultaneously, DCI-1A) form sends downlink physical control channel (Physical Downlink Control Channel, PDCCH) data, UE completes to eNB L3 feedback MIMO pattern configurations, eNB L3 notifies the MIMO pattern that eNB L2 is new, and eNB L2 carries out the transmission of PDCCH data with DCI form corresponding to new MIMO pattern. wherein, from eNB L3, notifying eNB L2 sends PDCCH data with DCI-1A form, to eNB L3, notify eNB L2 and carry out the transmission of PDCCH data with DCI form corresponding to new MIMO pattern, section is called transient state time section during this period of time.In transient state time section, UE is after the TM3 that comes into force, just can not be at Multicast Broadcast Single Frequency Network (Multicast Broadcast Single Frequency Network, MBSFN) above subframe, receive PDCCH packet, if in this section of transient state time section, base station still sends data on MBSFN subframe, and PDCCH packet will inevitably be lost so.
Do not have now relevant scheme to be defined in these transient processes, how eNB/UE carries out data processing, guarantees that packet can not be lost.
In the embodiment of the present invention, while carrying out CSI-RS configuration in LTE system, obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched; According to the matching result of described rate-matched, select current RE number.Realized thus in some configuration transient processes of LTE, can utilize correct RE number correctly to resolve PDSCH packet, can be because of the state of eNB and UE inconsistent causing resolve unsuccessfully and lost data packets.
In the embodiment of the present invention, when carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.Can guarantee that thus in transient process, the data in MBSFN subframe can not lost.
The communication means flow chart that Fig. 3 provides for the embodiment of the present invention one.As shown in Figure 3, described method comprises:
Owing to carrying out the needed time of rate-matched, it is all the integral multiple of TTI, and carrying out the needed shortest time of rate-matched is 8 TTI, therefore, described very first time threshold value is Transmission Time Interval (Transmission Time Interval, TTI) integral multiple, and be not less than 8 TTI.
Particularly, the method that the embodiment of the present invention provides, under a kind of implementation, UE obtains a RE number of deduction channel state information reference signals CSI-RS RE number, in very first time threshold value, according to a described RE number, carries out first rate coupling; UE judges whether described first rate coupling is correct; If the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select a RE number of not deducting CSI-RS RE number as current RE number.
The method that the embodiment of the present invention provides, under another kind of implementation, UE obtains the 2nd RE number of not deducting CSI-RSRE number, according to described the 2nd RE number, carries out the second rate-matched; UE judges that whether described the second rate-matched is correct; If the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
In the invention process, UE obtains RE number, in very first time threshold value, according to described RE number, carries out rate-matched; According to the matching result of described rate-matched, select current RE number.Realized thus in some configuration transient processes of LTE, can utilize correct RE number correctly to resolve PDSCH packet, can be because of the state of eNB and UE inconsistent causing resolve unsuccessfully and lost data packets.
What above-described embodiment was described is the course of work of communication means, and what following embodiment described is the course of work of communicator.The communicator schematic diagram that Fig. 4 provides for the embodiment of the present invention two.As shown in Figure 4, the device that the embodiment of the present invention provides comprises: matching unit 401 and selected cell 402.
Matching unit 401, for obtaining RE number, in very first time threshold value, carries out rate-matched according to described RE number, and the matching result of described rate-matched is sent to selected cell.
Selected cell 402, for receiving the matching result of the described rate-matched of described matching unit transmission, according to the matching result of described rate-matched, selects current RE number.
Wherein, owing to carrying out the needed time of rate-matched, it is all the integral multiple of TTI, and carrying out the needed shortest time of rate-matched is 8 TTI, therefore, described very first time threshold value in described device is Transmission Time Interval (Transmission Time Interval, TTI) integral multiple, and be not less than 8 TTI.
Particularly, the device that the embodiment of the present invention provides, under a kind of implementation:
Described matching unit 401 specifically for, obtain a RE number of deduction CSI-RS RE number, according to a described RE number, carry out first rate coupling.
Described selected cell 402 specifically for, if the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select the 2nd RE number of not deducting CSI-RS RE number as current RE number.
The device that the embodiment of the present invention provides, under another kind of implementation:
Described matching unit 401 specifically for, obtain the 2nd RE number of not deducting CSI-RS RE number, according to described the 2nd RE number, carry out the second rate-matched.
Described selected cell 402 specifically for, if the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
In the invention process, matching unit obtains RE number, in very first time threshold value, according to described RE number, carries out rate-matched; Selected cell, according to the matching result of described rate-matched, is selected current RE number.Realized thus in some configuration transient processes of LTE, can utilize correct RE number correctly to resolve PDSCH packet, can be because of the state of eNB and UE inconsistent causing resolve unsuccessfully and lost data packets.
What above-described embodiment was described is the course of work of communicator, and what following embodiment described is the course of work of another kind of communicator.The communicator schematic diagram that Fig. 5 provides for the embodiment of the present invention three.As shown in Figure 5, the device that the embodiment of the present invention provides comprises: network interface 501, processor 502 and memory 503.System bus 504 is for interconnection network interface 501, processor 502 and memory 503.
When starting, these component softwares are loaded in memory 503, then by processor 502, are accessed and carry out as given an order:
Obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched;
According to the matching result of described rate-matched, select current RE number.
Wherein, owing to carrying out the needed time of rate-matched, it is all the integral multiple of TTI, and carrying out the needed shortest time of rate-matched is 8 TTI, therefore, described very first time threshold value in described device is Transmission Time Interval (Transmission Time Interval, TTI) integral multiple, and be not less than 8 TTI.
Particularly, the device that the embodiment of the present invention provides, under a kind of implementation:
Described application program can be used for making described processor and the execution of described system to obtain RE number, in very first time threshold value, the instruction of carrying out rate-matched process according to described RE number is: a RE number that obtains deduction CSI-RS RE number, in very first time threshold value, according to a described RE number, carry out first rate coupling.
Described application program can be used for making described according to the matching result of described rate-matched, the instruction of selecting current RE to count process is: if the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select the 2nd RE number of not deducting CSI-RS RE number as current RE number.
The device that the embodiment of the present invention provides, under another kind of implementation:
Described application program can be used for making described processor and the execution of described system to obtain RE number, in very first time threshold value, the instruction of carrying out rate-matched process according to described RE number is: obtain the 2nd RE number of not deducting CSI-RS RE number, according to described the 2nd RE number, carry out the second rate-matched.
Described application program can be used for making described according to the matching result of described rate-matched, the instruction of selecting current RE to count process is: if the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
In the invention process, application program is obtained RE number, in very first time threshold value, according to described RE number, carries out rate-matched; According to the matching result of described rate-matched, select current RE number.Realized thus in some configuration transient processes of LTE, can utilize correct RE number correctly to resolve PDSCH packet, can be because of the state of eNB and UE inconsistent causing resolve unsuccessfully and lost data packets.
What above-mentioned several embodiment described is in LTE system, transient state in CSI-RS layoutprocedure is in the period, by selecting correct RE number to carry out the correct parsing of PDSCH packet, thereby solved because the inconsistent PDSCH of the causing packet of state of eNB and UE is resolved unsuccessfully and the problem of lost data packets.Following several embodiment describes be in mimo system TM9 to the transient state in TM3 handoff procedure in the period, due to inconsistent way to solve the problem and the device that causes Data Analysis mistake of state of eNB and UE.
The process flow figure of the transient state that Fig. 6 provides for the embodiment of the present invention four.As shown in Figure 6, the method that the embodiment of the present invention provides comprises:
Step 601 when carrying out MIMO pattern configurations, is carried out the transmission of downlink data on non-MBSFN subframe.
Particularly, eNB, when carrying out MIMO pattern reprovision, carries out the transmission of downlink data on non-MBSFN subframe, does not carry out the transmission of downlink data on MBSFN subframe, can guarantee that the data in MBSFN subframe can not lost.
In the embodiment of the present invention, eNB, when carrying out MIMO pattern configurations, carries out the transmission of downlink data on non-MBSFN subframe.Can guarantee that thus in transient process, the data in MBSFN subframe can not lost.
The treating apparatus schematic diagram of the transient state that Fig. 7 provides for the embodiment of the present invention five.As shown in Figure 7, the device that the embodiment of the present invention provides comprises: processing unit 701.
In the embodiment of the present invention, eNB, when carrying out MIMO pattern configurations, carries out the transmission of downlink data on non-MBSFN subframe.Can guarantee that thus in transient process, the data in MBSFN subframe can not lost.
The treating apparatus schematic diagram of the transient state that Fig. 8 provides for the embodiment of the present invention six.As shown in Figure 8, the device that the embodiment of the present invention provides comprises: network interface 801, processor 802 and memory 803.System bus 804 is for interconnection network interface 801, processor 802 and memory 803.
When starting, these component softwares are loaded in memory 803, then by processor 802, are accessed and carry out as given an order:
When carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.
In the embodiment of the present invention, eNB, when carrying out MIMO pattern configurations, carries out the transmission of downlink data on non-MBSFN subframe.Can guarantee that thus in transient process, the data in MBSFN subframe can not lost.
Professional should further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with different device to each, but this realization should not thought and exceeds scope of the present invention.
The software module that the device of describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random access memory (RAM), internal memory, read-only storage (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
The above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a communication means, is characterized in that, described method comprises:
Obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched;
According to the matching result of described rate-matched, select current RE number.
As claim 1, as described in communication means, it is characterized in that,
The described RE number that obtains, in very first time threshold value, according to described RE number, carrying out rate-matched comprises: obtain a RE number of deduction channel state information reference signals CSI-RS RE number, in very first time threshold value, according to a described RE number, carry out first rate coupling;
Described according to the matching result of described rate-matched, select current RE number specifically to comprise: if the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select the 2nd RE number of not deducting CSI-RS RE number as current RE number.
As claim 1, as described in communication means, it is characterized in that,
The described RE number that obtains, in very first time threshold value, carries out rate-matched according to described RE number and comprises: obtain the 2nd RE number of not deducting CSI-RS RE number, according to described the 2nd RE number, carry out the second rate-matched;
Described according to the matching result of described rate-matched, select current RE number specifically to comprise: if the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
As claim 1, to the communication means as described in 3 any one, it is characterized in that, described very first time threshold value is the integral multiple of Transmission Time Interval TTI, and described very first time threshold value is not less than 8 TTI.
5. a communication means, is characterized in that, when carrying out multiple-input and multiple-output MIMO pattern reprovision, carries out the transmission of downlink data on non-Multicast Broadcast Single Frequency Network MBSFN subframe.
6. a communicator, is characterized in that, described device comprises:
Matching unit, for obtaining RE number, in very first time threshold value, carries out rate-matched according to described RE number, and the matching result of described rate-matched is sent to selected cell;
Selected cell, for receiving the matching result of the described rate-matched of described matching unit transmission, according to the matching result of described rate-matched, selects current RE number.
As claim 6, as described in communicator, it is characterized in that,
Described matching unit specifically for, obtain a RE number of deduction CSI-RS RE number, in very first time threshold value, according to a described RE number, carry out first rate coupling;
Described selected cell specifically for, if the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select the 2nd RE number of not deducting CSI-RS RE number as current RE number.
As claim 6, as described in communicator, it is characterized in that,
Described matching unit specifically for, obtain the 2nd RE number of not deducting CSI-RS RE number, according to described the 2nd RE number, carry out the second rate-matched;
Described selected cell specifically for, if the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
9. the communicator as described in claim 6 to 8 any one, is characterized in that, the integral multiple that the very first time threshold value in described matching unit is TTI, and described very first time threshold value is not less than 8 TTI.
10. a communicator, is characterized in that, described device comprises:
Processing unit for when carrying out MIMO pattern configurations, does not carry out the transmission of downlink data on MBSFN subframe.
11. 1 kinds of communicators, is characterized in that, described device comprises:
Network interface;
Processor;
Memory;
The application program of physical store in described memory, described application program comprises and can be used for making described processor and described system to carry out the instruction of following process:
Obtain RE number, in very first time threshold value, according to described RE number, carry out rate-matched;
According to the matching result of described rate-matched, select current RE number.
12. as claim 11, as described in communicator, it is characterized in that,
Described application program can be used for making described processor and the execution of described system to obtain RE number, in very first time threshold value, the instruction of carrying out rate-matched process according to described RE number is: a RE number that obtains deduction CSI-RS RE number, in very first time threshold value, according to a described RE number, carry out first rate coupling;
Described application program can be used for making described according to the matching result of described rate-matched, the instruction of selecting current RE to count process is: if the matching result of described first rate coupling is correct, select a described RE number as current RE number, otherwise, select the 2nd RE number of not deducting CSI-RS RE number as current RE number.
13. as claim 11, as described in communicator, it is characterized in that,
Described application program can be used for making described processor and the execution of described system to obtain RE number, in very first time threshold value, the instruction of carrying out rate-matched process according to described RE number is: obtain the 2nd RE number of not deducting CSI-RSRE number, according to described the 2nd RE number, carry out the second rate-matched;
Described application program can be used for making described according to the matching result of described rate-matched, the instruction of selecting current RE to count process is: if the matching result of described the second rate-matched is correct, select described the 2nd RE number as current RE number, otherwise, select a RE number of deduction CSI-RS RE number as current RE number.
14. as claim 11, to the communicator as described in 13 any one, it is characterized in that, and the integral multiple that the described very first time threshold value in described application program is TTI, and described very first time threshold value is not less than 8 TTI.
15. 1 kinds of communicators, is characterized in that, described device comprises:
Network interface;
Processor;
Memory;
The application program of physical store in described memory, described application program comprises and can be used for making described processor and described system to carry out the instruction of following process:
When carrying out MIMO pattern configurations, on non-MBSFN subframe, carry out the transmission of downlink data.
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| PCT/CN2012/086995 WO2014094267A1 (en) | 2012-12-20 | 2012-12-20 | Communication method and device |
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| CN101325739A (en) * | 2007-06-14 | 2008-12-17 | 北京三星通信技术研究有限公司 | Method for transmitting upstream data and upstream control signaling |
| CN102239649A (en) * | 2008-12-02 | 2011-11-09 | Lg电子株式会社 | Method for transmitting reference signals in a downlink multiple input multiple output system |
| WO2012061521A1 (en) * | 2010-11-02 | 2012-05-10 | Qualcomm Incorporated | Method and apparatus for rate matching with muting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101325739A (en) * | 2007-06-14 | 2008-12-17 | 北京三星通信技术研究有限公司 | Method for transmitting upstream data and upstream control signaling |
| CN102239649A (en) * | 2008-12-02 | 2011-11-09 | Lg电子株式会社 | Method for transmitting reference signals in a downlink multiple input multiple output system |
| WO2012061521A1 (en) * | 2010-11-02 | 2012-05-10 | Qualcomm Incorporated | Method and apparatus for rate matching with muting |
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